PROBLEM TO BE SOLVED: To provide an outdoor light of which light is illuminated by electricity generated by a generator that is rotated by rotation of a water turbine.SOLUTION: In the outdoor light, the water turbine 1 includes a rotation shaft that is set horizontally and journaled so as to be rotatable in a vertical plane, and has a structure where a plurality of blades 7, 7... is attached between parallel circular disks 6, 6 having a prescribed interval therebetween. The outdoor light includes: a water supply pipe 12 for supplying water in a position above the water turbine 1； the generator for generating electricity by rotation of the water turbine 1； and the light illuminated by the electricity generated by the generator.SELECTED DRAWING: Figure 1
